The ring of winter
One of the Harpers (a secret organization fighting for good) searches the jungle for a missing explorer and happens on a lost civilization--complete with dinosaurs--and the evil Cult of Frost, which tries to steal his magic ring
Harpers, bk. 5
Fiction
1 online resource.
9780786963393, 0786963395
798281345
archive.org Free eBook from the Internet Archive
openlibrary.org Additional information and access via Open Library